Improvement in means for holding stereotype-plates



A. N. KELLOGG. Means for Holding Stereotype Plates.

,208,131, Patented Sept. 17,1878.

UNITED STATES PATENT OFFICE.

ANSEL N. KELLOGG, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN MEANS FOR HOLDING STEREOTYPE-PLATES.

Specification forming part of Letters Patent No. 208,181, datedSeptember 17, 1878; application filed May 4, 1878.

To all whom it may concern:

Be it known that I, ANsEL N. KELLOGG, of Chicago, in the county of Cookand State of Illinois, have invented certain Improvements in Means forHolding Stereotype-Plates, of which the following is a specification:

In the Letters Patent to me of February 15, 187 6, I described aninvention designed to facilitate changes in portions of the matterwith-' out unlocking the form or removing it from the press, the sameconsisting, essentially, of the combination, in a printers form, of afoundation or abutment block of suflieient horizontal dimensions to lockin the form, and of sutlicient depth to afford bearings at ends andsides for the contiguous matter, and a loose removable type-blocksupported by theabutment-block. and of somewhat smaller dimensions, soas to be loose and removable from the form, wherein it is held by itsown weight. While possessing great utility, that improvement is ehieflyuseful in cases where rapidity of change is desired.

In the present invention, which is also designed to permit the sameabutment-block to be used as a mounting for a series of differenttype-plates, but where a saving of metal in the latter is more desirablethan rapidity in changing the form, instead of relying upon the weightof the type-blocks to keep them in place, I make them of such lateraldimensions that they will be grasped by the column-rules .when locked inthe form and held by friction therewith. This manner of securing themenables me to reduce their weight and thickness and to economize greatlythe metal used in their construction.

The invention may be used in a page all of blocks, as described below,or partly of type.

The accompanying drawing shows, at Figure 1, a plan view of a two-columnform, made up after the present invention. Fig. 2 is a cross-sectionthereof on the line a: w of Fig. 1. Fig. 3 is a perspective of thedivision-dash employed in combination with the other parts of myinvention.

Like letters indicate like parts wherever used in the several figures.

In said drawing, A represents the chase in which the form is locked. B Bare the type blocks or plates, and G O the abutment-blocks.

As noticed in Fig. 2, the type-blocks are about one-third and theabutment-blocks about two-thirds type'high. These relative dimensionsare not essential, however, as my invention permits the use oftype-blocks of even less thickness than is shown. The abutmentblocksshould be preferably of such horizontal dimensions as to be heldsecurely in the form by pressure at both ends and sides; but they may beotherwise secured. The type-blocks are secured by friction with thesides only, being short enough to avoid the end pressure, and thusobviate the bowing which would result to such thin plates it they werelong enough to feel said end pressure.

Inasmuch as the chase and side-sticks as usually constructed .do notcome sufliciently high to give a side bearing to the type-blocks in theoutside columns of the form, I employ at the sides of the form sticks Da little lower than the column-rules, so that they will give noimpression, and bevel them off upon one side, as shown, to avoid theirbeing inked and soiling the paper in the printing. The usualcolumn-rules D are employed at other places in the form, as customary.

The abutment-blocks will, of course, vary I in length fromthetype-blocks, and it thus becomes necessary to secure thedivisiondashes, which do not reach to the bottom of the form, by somemeans other than friction, because my invention does not contemplatepressure upon the type-blocks from the ends of the columns. The means Ihave adopted to secure these shallow dashes E are projections 0 standingout from either side, as shown in Fig. 3, and adapted to enter theopenings b made in the type-plates.

If preferred, the projections may be made so as to look under the archesof the typeblocks, and but oneprojection is absolutely necessary. Whenmade as shown, these dashes also serve the purpose of securing any platethat may, by imperfect construction, not be held by the side friction.

What I claim is- The combination of the ordinary straight vertical sidedcolumnrules, side sticks, or chase, a type block or plate, and anabutmentblock upon which to rest said plate, said plate coming incontact and being held in the form by friction with said column-rules,side-s ticks, or chase, substantially as set forth.

A. N. KELLOGG.

Witnesses:

E. E. PRATT, W. H. THOMSON.

